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Author: Peterson, Roger S.
Source: Journal of Forestry, Volume 59, Number 3, 1 March 1961, pp. 194-196(3)
Publisher: Society of American Foresters
Document Type: Journal Article
Affiliations: Plant Pathologist, Rocky Mountain Forest and Range Expt. Sta. Forest Service, U. S. Dept. Agric., with central headquarters at Fort Collins in cooperation with Colorado State University
Publication date: March 1, 1961